>-----Original Message-----
>From: Ken Pergola [mailto:no_spam@LOCALNET.COM]
>Sent: 25 February 2004 21:55
>To: PICLIST@MITVMA.MIT.EDU
>Subject: Re: AVR, PIC or ...
>
>
>Stef Mientki wrote:
>
>> I just received the engineering review from Maxim.
>> If I only take a look at the pictures,
>> we should immediately stop using PICs and AVRs and go for
>Maxim. Judge
>> yourself:
>>   http://pdfserv.maxim-ic.com/en/ej/MER_3.pdf
>
>
>Hi Stef,
>
>Will make interesting reading.
>
>The PIC18 architecture has been out since 1999 -- I wish Maxim
>used it for comparison instead of the midrange PICs.
>
>Regards,
>
>Ken Pergola

Absolutely agree. The MAXQ20 at least seems to be a direct competitor to the
18F.

The benchmarks are also mighty suspect to say the least.  For starters no
source code is shown for most of them, and the cycle count for the PIC's is
frankly ludicrous e.g.

Shift a 16 bit value right two bits, allegedly the PIC takes 40 cycles!

clrc                    ;1
rrf  val+1,f    ;1
rrf  val,f              ;1
clrc                    ;1
rrf  val+1,f    ;1
rrf  val,f              ;1

I make that 6 cycles + a couple for initial bank setting if we are being
fussy.

How about sending an 8 bit value out on two pins, SPI style?  They reckon
the PIC takes 296 cycles to do this!  I can only imagaine the guy who wrote
the code must be a bit slack, because they'd never make up those numbers now
would they?

Regards

Mike




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